Spend your money on a pair of good powered speakers...preferably ones that perform well without a sub and are easy to put on stands.
The type of venues you play will dictate the power rating.
Many of the members here can suggest various brands and their pros and cons.
Ian
------------------
Remember to leave good news alone.
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.